public class Time2
 {
   private int hour;
   private int minute;
   private int second;
   public Time2()
   {
     this( 0, 0, 0 );
   }
   public Time2( int h )
   {
     this( h, 0, 0 );
   }
   public Time2 ( int h, int m )
   {
     this( h, m, 0 );
   }
   public Time2( int h, int m, int s )
   {
     setTime( h, m, s );
   }
   public Time2( Time2 time )
   {
     this( time.getHour(), time.getMinute(), time.getSecond() );
   }
   public void setTime( int h, int m, int s )
   {
     setHour( h );
     setMinute( m );
     setSecond( s );
   }
   public void setHour( int h )
   {
     if ( h >= 0 && h < 24 )
       hour = h;
     else
       throw new IllegalArgumentException( "hour must be 0-23" );
   }
   public void setMinute( int m )
   {
     if ( m >= 0 && m < 60 )
       minute = m;
     else
       throw new IllegalArgumentException( "minute must be 0-59" );
   }
   public void setSecond( int s )
   {
     if ( s >= 0 && s < 60 )
       second = ( ( s >= 0 && s < 60 ) ? s : 0 );
     else
       throw new IllegalArgumentException( "second must be 0-59" );
   }
   public int getHour()
   {
     return hour;
   }
   public int getMinute()
   {
     return minute;
   }
   public int getSecond()
   {
     return second;
   }
   public String toUniversalString()
   {
     return String.format(
       "%02d:%02d:%02d", getHour(), getMinute(), getSecond() );
   }
   public String toString()
   {
     return String.format( "%d:%02d:%02d %s",
       ( (getHour() == 0 || getHour() == 12 ) ? 12 : getHour() % 12 ),
       getMinute(), getSecond(), ( getHour() < 12 ? "AM" : "PM" ) );
   }
 }